{"instruction": "You are an expert in named entity recognition. Please extract entities that match the schema definition from the input. Return an empty list if the entity type does not exist. Please respond in the format of a JSON string.", "schema": ["Disease", "Chemical"], "input": "Metoprolol was dosed to achieve a resting predobutamine heart rate below 65 beats / minute or a total intravenous dose of 20 mg ."}
{"Disease": [], "Chemical": ["Metoprolol", "predobutamine"]}